Electrocardiosignal compression sampling device and method based on random demodulation structure

Abstract

The invention relates to the field of medical care electronic appliances, in particular to an electrocardiosignal compression sampling device and method based on a random demodulation structure. The device comprises an FPGA controller, a pseudo-random signal generator, a frequency mixer, a filter, an AD converter, an FIFO memory, a data transmission chip, an upper computer OMP algorithm and the like. The FPGA control circuit is adopted as a main controller to control the pseudo-random signal generator to generate pseudo-random sequence signals, electrocardiosignals and the pseudo-random sequence signals pass through the frequency mixer at the same time, frequency components of the electrocardiosignals are distributed on the whole frequency axis, low-frequency components are intercepted through the low-pass filter, AD low-frequency sampling is finally achieved, correct information can be obtained, sampling information is stored and then transmitted to an upper computer end of a computer, and electrocardiosignals can be accurately reconstructed through an OMP algorithm. The device has the advantages that the electrocardiosignal sampling power consumption is reduced, the endurance time of sampling equipment is prolonged, the storage capacity requirement of a memory in the equipment is reduced, and the storage cost is reduced.

Description

technical field [0001] The invention relates to the technical field of medical and nursing electronic appliances, in particular to an electrocardiographic signal compression sampling device and method based on a random demodulation structure. Background technique [0002] Wearable ECG monitoring equipment is often used to collect human ECG signals to monitor psychological functions and respond to emergencies in a timely manner. The frequency range of the human ECG signal is 0.05Hz to 100Hz. In order to improve the sampling accuracy, the sampling frequency of the existing ECG monitoring equipment is generally higher than 250Hz. The ECG monitoring equipment requires long-term uninterrupted high-frequency sampling. (ADC) and memory storage capacity, etc. put forward higher requirements, increasing the difficulty of sampling. [0003] In order to solve the above problems, an ECG signal compression sampling device and method based on a random demodulation structure is proposed, ...

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Problems solved by technology

[0005] Aiming at the problem that the electrocardiogram monitoring equipment will obtain a large amount of data during the long-term uninterrupted sampling process, and the sampling power consumption of the equipment is high, the present invention provides an electrocardiogram signal compression sampling device and method based on a random demodulation structure to solve the above problems

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